EFFECT OF roPI'ER SiT^LPHATE. 



19 



J-Jlf'tcl of nirliiuti vviKridrnliuiiii nj nipper Kitl/ilialc hjhhi dijj'criiil Junns nf >i/t/;i — Cuut'd. 



GJ-ROXJP 1— Continued. 

 SCENEDESMUS QUADRICAUDA (Turp.) Breb. 



Date. 



September 14-18 . 

 Deci-mbiT 7-12 . . 

 January 11-1.5 . . . 



One part copper sulphate to water, parts — 



100,000 j 200,000 



d 



d 



vfa 



d 



vfa 

 vfa 



300,000 I 400,000 500,000 



vfa 

 vfa 

 vfa 



id 

 id 



g 



g 

 g 



1,000,000 



s 



g 

 g 



{;hcek. 



g 

 g 

 g 



EUGLENA VIRIDIS Ehrb. 



SPIROGYRA STRICT A (E. Bot.) Wille. 



GUiOXJP 3. 



CONFERVA BOMBYCINUM Ag. 



Date. 



October 1-4... 

 October 8-11.. 

 October 13-17. 



One part copper sulphate to water, parts — 



50,000 



d 

 d 

 d 



100,000 



d 

 d 

 d 



300,000 



d 

 d 

 d 



500,000 I 1,000,000 



d 



vfa 

 vfa 



d 



vfa 

 via 



2,000,000 



g 

 g 

 g 



Check. 



g 

 g 

 g 



CLOSTERIUM MONILIPERUM (Bory ) Ehrb. 



SYNURA UVELLA Ehrb. 



